CVE-2021-26910

PoC ×3—

CVSS 3.1

7.0 high

EPSS

<1%p38

Published

Feb 8, 2021 (Feb 8, 2021)

Modified

Jun 17, 2026

Description

Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU race condition between a stat operation and an OverlayFS mount operation.

Vendors: firejail project debian
Products: firejail, debian linux
Weakness: CWE-367
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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